The source and the observer are moving towards each other. The observer is moving toward the source. The source is moving away from the observer
A screw driver rusting when left in a pail of water is a chemical reaction
Answer:
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Answer: coefficient of static friction
= 0.31
Explanation: Since they negotiate the curve without skidding, the frictional force (F1) equals the centripetal force (F2).
F1= uN
F2 = M*(v²/r)
M is the combined mass 450kg
V is the velocity 18m/s
r is the radius 106m
N is the normal reaction 4410N
u is the coefficient of static friction
Making u subject of the formula we have that,
u = {450*(18²/106)} /4410
=1375.47/4410
=0.31
NOTE: coefficient of friction is dimensionless. It as no Unit.
The electric force exerted by an electric field of intensity E on a charge q is equal to the product between E and q, so:
